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DFB型金属长梁连接方式大起底,总有您不知道的

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DFB型金属长梁中的焊缝连接,主要采用电弧焊,即在构件连接处,借电弧产生的高温


◆焊缝连接

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DFB型金属长梁对接焊缝当采用与主体金属相适应的焊条或焊丝,施焊合理,质量合格时,其强度与主体金属强度相当


DFB型金属长梁对接焊缝当采用与主体金属相适应的焊条或焊丝,施焊合理,质量合格时,其强度与主体金属强度相当。角焊缝的截面形状,一般为等腰直角三角形,其直角边长称为焊脚(hf),斜边上的高(0.7hf)称为有效厚度。用侧面角焊缝连接承受轴向力时,焊缝主要承受剪切力,计算时,假设剪应力沿着有效厚度的剪切面均匀分布,只验算其抗剪强度。正面角焊缝受力复杂,同时存在弯曲、拉伸(或压缩)和剪切应力,其破坏强度比侧面角焊缝高。关于焊缝的构造要求,施工验收规范均有专门规定。【具体可参考《DFB型金属长梁适用于哪些煤层条件?怎样安装?》的相关内容】

 

铆钉是由顶锻性能好的铆钉钢制成,铆钉连接的施工程序,是先在被连接的构件上


◆铆钉连接

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